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DD273991A1
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Method for dust-free drilling of concrete stone and other materials
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DD237119A1
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Method and device for optional mixing or granulation
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DD215093A1
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Process for raw material-optimized energy-economic rolling and steel production
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DD211110A1
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Catalytic effective sparduenger
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DD210964A1
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Method and device for material drying and deflaking
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DD207372A1
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Method for producing light blocks and building materials
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DD152380A1
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Method and device for underground fastening
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DD152044A1
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Method of using mining tips, halden and duenen
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DD152139A1
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Implosionsbrikettierung
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DD151997A1
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Method for reducing exhaust gas losses
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DD150908A1
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Method for useful burning of combustible coal products
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DD149660A1
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Process for combined use of brown coal products
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DD142732A1
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Method for producing building materials and relief plates
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DD154526A2
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Method and device for raw-molding preparation with wear-reduction
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DD142364A1
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Method and apparatus for freeze connection of ice links
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DD148189A1
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Method and device for raw and worker tool preparation
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DD141138A1
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Method of relief production, wall design and façade restoration
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DD141008A1
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Process for supporting fine and fine-corn good
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DD141810A1
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Method and device for the approval of vehicles
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DD138539A1
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Process for environmental protection and restoration of plastics and construction works
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